{"version":3,"file":"index.mjs","names":[],"sources":["../../src/crypto.ts","../../src/defaults.ts","../../src/util.ts","../../src/hypercore-factory.ts","../../src/iterator.ts"],"sourcesContent":["//\n// Copyright 2022 DXOS.org\n//\n\nimport { callbackify } from 'node:util';\n\nimport { type Codec, type EncodingOptions } from '@dxos/codec-protobuf';\nimport { type Signer, verifySignature } from '@dxos/crypto';\nimport { invariant } from '@dxos/invariant';\nimport { type PublicKey } from '@dxos/keys';\nimport { arrayToBuffer } from '@dxos/util';\nimport { type AbstractValueEncoding, type Crypto } from '@dxos/vendor-hypercore/hypercore';\n\n/**\n * Create encoding (e.g., from protobuf codec).\n */\nexport const createCodecEncoding = (codec: Codec, opts?: EncodingOptions): AbstractValueEncoding => ({\n encode: (obj: T) => arrayToBuffer(codec.encode(obj, opts)),\n decode: (buffer: Buffer) => codec.decode(buffer, opts),\n});\n\n/**\n * Create a custom hypercore crypto signer.\n */\n// TODO(burdon): Create test without adding deps.\nexport const createCrypto = (signer: Signer, publicKey: PublicKey): Crypto => {\n invariant(signer);\n invariant(publicKey);\n\n return {\n sign: (message, secretKey, cb) => {\n callbackify(signer.sign.bind(signer!))(publicKey, message, (err, result) => {\n if (err) {\n cb(err, null);\n return;\n }\n\n cb(null, arrayToBuffer(result));\n });\n },\n\n verify: async (message, signature, key, cb) => {\n // NOTE: Uses the public key passed into function.\n callbackify(verifySignature)(publicKey, message, signature, cb);\n },\n };\n};\n","//\n// Copyright 2022 DXOS.org\n//\n\nimport type {\n HypercoreOptions,\n ReadStreamOptions,\n ReplicationOptions,\n WriteStreamOptions,\n} from '@dxos/vendor-hypercore/hypercore';\n\n/**\n * https://github.com/hypercore-protocol/hypercore/tree/v9.12.0#var-feed--hypercorestorage-key-options\n */\nexport const defaultFeedOptions: HypercoreOptions = {\n createIfMissing: true,\n valueEncoding: 'binary',\n};\n\n/**\n * https://github.com/hypercore-protocol/hypercore/tree/v9.12.0#var-stream--feedcreatereadstreamoptions\n */\nexport const defaultReadStreamOptions: ReadStreamOptions = {\n start: 0,\n end: Infinity,\n snapshot: true,\n tail: false,\n live: false,\n timeout: 0,\n wait: true,\n batch: 1,\n};\n\n/**\n * https://github.com/hypercore-protocol/hypercore/tree/v9.12.0#var-stream--feedcreatewritestreamopts\n */\nexport const defaultWriteStreamOptions: WriteStreamOptions = {\n maxBlockSize: Infinity,\n};\n\n/**\n * https://github.com/hypercore-protocol/hypercore/tree/v9.12.0#var-stream--feedreplicateisinitiator-options\n */\nexport const defaultReplicateOptions: ReplicationOptions = {\n live: false,\n ack: false,\n download: true,\n upload: true,\n encrypted: true,\n noise: true,\n};\n","//\n// Copyright 2022 DXOS.org\n//\n\nimport { promisify } from 'node:util';\n\nexport const py = (obj: any, fn: Function) => promisify(fn.bind(obj));\n","//\n// Copyright 2022 DXOS.org\n//\n\nimport { invariant } from '@dxos/invariant';\nimport { type Directory, StorageType, createStorage } from '@dxos/random-access-storage';\nimport hypercore from '@dxos/vendor-hypercore/hypercore';\nimport type { Hypercore, HypercoreOptions } from '@dxos/vendor-hypercore/hypercore';\n\nimport { py } from './util';\n\n/**\n * Creates feeds with default properties.\n */\nexport class HypercoreFactory {\n constructor(\n private readonly _root: Directory = createStorage({ type: StorageType.RAM }).createDirectory(),\n private readonly _options?: HypercoreOptions,\n ) {\n invariant(this._root);\n }\n\n /**\n * Creates a feed using a storage factory prefixed with the feed's key.\n * NOTE: We have to use our `random-access-storage` implementation since the native ones\n * do not behave uniformly across platforms.\n */\n createFeed(publicKey: Buffer, options?: HypercoreOptions): Hypercore {\n const directory = this._root.createDirectory(publicKey.toString('hex'));\n const storage = (filename: string) => directory.getOrCreateFile(filename).native;\n return hypercore(storage, publicKey, Object.assign({}, this._options, options));\n }\n\n /**\n * Creates and opens a feed.\n */\n async openFeed(publicKey: Buffer, options?: HypercoreOptions): Promise> {\n const feed = this.createFeed(publicKey, options);\n await py(feed, feed.open)(); // TODO(burdon): Sometimes strange bug if done inside function.\n return feed;\n }\n}\n","//\n// Copyright 2022 DXOS.org\n//\n\nimport { Readable } from 'readable-stream';\nimport { type Readable as StreamXReadable } from 'streamx';\n\n/**\n * Wraps streamx.Readable (hypercore.createReadStream) to a standard Readable stream.\n *\n * The read-stream package is mirror of the streams implementations in Node.js 18.9.0.\n * This function is here to standardize the cast in case there are incompatibilities\n * across different platforms.\n *\n * Hypercore createReadStream returns a `streamx` Readable, which does not close properly on destroy.\n *\n * https://github.com/nodejs/readable-stream\n * https://nodejs.org/api/stream.html#readable-streams\n * https://nodejs.org/dist/v18.9.0/docs/api/stream.html#readablewrapstream\n */\nexport const createReadable = (stream: StreamXReadable): Readable => {\n return new Readable({ objectMode: true }).wrap(stream as any);\n};\n\n/**\n * Converts streamx.Readable (hypercore.createReadStream) to an async iterator.\n *\n * https://github.com/tc39/proposal-async-iteration\n * https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-3.html#async-iteration\n * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators\n * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols\n */\nexport const createAsyncIterator = (stream: Readable): AsyncIterator => {\n return stream[Symbol.asyncIterator]();\n};\n"],"mappings":";;;;;;;;;;;;AAgBA,IAAa,uBAA0B,OAAiB,UAAsD;CAC5G,SAAS,QAAW,cAAc,MAAM,OAAO,KAAK,IAAI,CAAC;CACzD,SAAS,WAAmB,MAAM,OAAO,QAAQ,IAAI;AACvD;;;;AAMA,IAAa,gBAAgB,QAAgB,cAAiC;CAC5E,UAAU,QAAK,KAAA,GAAA;EAAA,YAAA;EAAA,GAAA;EAAA,GAAA;EAAA,GAAA,KAAA;EAAA,GAAA,CAAA,UAAA,EAAA;CAAA,CAAC;CAChB,UAAU,WAAQ,KAAA,GAAA;EAAA,YAAA;EAAA,GAAA;EAAA,GAAA;EAAA,GAAA,KAAA;EAAA,GAAA,CAAA,aAAA,EAAA;CAAA,CAAC;CAEnB,OAAO;EACL,OAAO,SAAS,WAAW,OAAO;GAChC,YAAY,OAAO,KAAK,KAAK,MAAO,CAAC,CAAC,CAAC,WAAW,UAAU,KAAK,WAAW;IAC1E,IAAI,KAAK;KACP,GAAG,KAAK,IAAI;KACZ;IACF;IAEA,GAAG,MAAM,cAAc,MAAM,CAAC;GAChC,CAAC;EACH;EAEA,QAAQ,OAAO,SAAS,WAAW,KAAK,OAAO;GAE7C,YAAY,eAAe,CAAC,CAAC,WAAW,SAAS,WAAW,EAAE;EAChE;CACF;AACF;;;;;;AChCA,IAAa,qBAAuC;CAClD,iBAAiB;CACjB,eAAe;AACjB;;;;AAKA,IAAa,2BAA8C;CACzD,OAAO;CACP,KAAK;CACL,UAAU;CACV,MAAM;CACN,MAAM;CACN,SAAS;CACT,MAAM;CACN,OAAO;AACT;;;;AAKA,IAAa,4BAAgD,EAC3D,cAAc,SAChB;;;;AAKA,IAAa,0BAA8C;CACzD,MAAM;CACN,KAAK;CACL,UAAU;CACV,QAAQ;CACR,WAAW;CACX,OAAO;AACT;;;AC5CA,IAAa,MAAM,KAAU,OAAiB,UAAU,GAAG,KAAK,GAAG,CAAC;;;;;;;ACQpE,IAAa,mBAAb,MAAiC;CAEZ;CACA;CAFnB,YACE,QAAoC,cAAc,EAAE,MAAM,YAAY,IAAI,CAAC,CAAC,CAAC,gBAAgB,GAC7F,UACA;EAFiB,KAAA,QAAA;EACA,KAAA,WAAA;EAEjB,UAAU,KAAK,OAAI,KAAA,GAAA;GAAA,YAAA;GAAA,GAAA;GAAA,GAAA;GAAA,GAAA;GAAA,GAAA,CAAA,cAAA,EAAA;EAAA,CAAC;CACtB;;;;;;CAOA,WAAW,WAAmB,SAA0C;EACtE,MAAM,YAAY,KAAK,MAAM,gBAAgB,UAAU,SAAS,KAAK,CAAC;EACtE,MAAM,WAAW,aAAqB,UAAU,gBAAgB,QAAQ,CAAC,CAAC;EAC1E,OAAO,YAAU,SAAS,WAAW,OAAO,OAAO,CAAC,GAAG,KAAK,UAAU,OAAO,CAAC;CAChF;;;;CAKA,MAAM,SAAS,WAAmB,SAAmD;EACnF,MAAM,OAAO,KAAK,WAAW,WAAW,OAAO;EAC/C,MAAM,GAAG,MAAM,KAAK,IAAI,CAAC,CAAC;EAC1B,OAAO;CACT;AACF;;;;;;;;;;;;;;;;ACrBA,IAAa,kBAAkB,WAAsC;CACnE,OAAO,IAAI,SAAS,EAAE,YAAY,KAAK,CAAC,CAAC,CAAC,KAAK,MAAa;AAC9D;;;;;;;;;AAUA,IAAa,uBAAuB,WAAyC;CAC3E,OAAO,OAAO,OAAO,cAAc,CAAC;AACtC"}